4.5*2.6+2.6*5.5 99*0.56-0.56上面的题简便运算_数学解答

4.5*2.6+2.6*5.5 99*0.56-0.56
上面的题简便运算

人气：249 ℃　时间：2020-01-29 21:07:39

解答

4.5*2.6+2.6*5.5
=(4.5+5.5)*2.6
=10*2.6
=26
99*0.56-0.56
=(99-1)*0.56
=(100-2)*0.56
=100*0.56-1.12
=56-1.12
=54.88